By the way...as far as the electrical goes. Start by checking all the fuses. Their are at least 3 fuse panels on the rig. 1 in bedroom for breakers for the AC equipment. Another in front of the passenger seat. These are mostly for
12 volt. Another is inside the front hood compartment. That's most likely where you will find fuses for the instrument panel, wipers, exterior lights, etc. Its possible some might be near the batteries for motor and coach also.
Another trick is to turn the headlight switch left and right to see if it makes them brighter. Turn it all the way to left till it clicks and you should get some cool under dash lights in front of both seats. They make a big difference when traveling at night.